Foil 77
9.2.3 ZAPI Controller
19) DRIVER SHORTED (only with H0 STANDARD TRACT.)
If voltage at the NT1 terminal (A11) does not correspond to the desired value, an alarm is output and
the system switches off.
Possible causes:
a) Wire at the NT1 terminal (A11) broken or coil of the direction contactor
for forward or reverse ride is defective.
b) Internal driver MOSFET short-circuited (replace controller!)
20) CONTACTOR OPEN
Test upon actuation of a direction;
– It is checked whether the selected direction contactor closes by measuring the value of the VMN.
If this value is not correct, an alarm is output.
Proceed to the following instructions for remedy:
Summary of Contents for 7580.02
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